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  • Modelling Dermal Drug Distribution After Topical Application in Human

    Author(s)
    Anissimov, Yuri G
    Roberts, Michael Stephen
    Griffith University Author(s)
    Anissimov, Yuri G.
    Year published
    2011
    Metadata
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    Abstract
    Purpose To model and interpret drug distribution in the dermis and underlying tissues after topical application which is relevant to the treatment of local conditions. Methods We created a new physiological pharmacokinetic model to describe the effect of blood flow, blood protein binding and dermal binding on the rate and depth of penetration of topical drugs into the underlying skin. We used this model to interpret literature in vivo human biopsy data on dermal drug concentration at various depths in the dermis after topical application of six substances. This interpretation was facilitated by our in vitro human ...
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    Purpose To model and interpret drug distribution in the dermis and underlying tissues after topical application which is relevant to the treatment of local conditions. Methods We created a new physiological pharmacokinetic model to describe the effect of blood flow, blood protein binding and dermal binding on the rate and depth of penetration of topical drugs into the underlying skin. We used this model to interpret literature in vivo human biopsy data on dermal drug concentration at various depths in the dermis after topical application of six substances. This interpretation was facilitated by our in vitro human dermal penetration studies in which dermal diffusion coefficient and binding were estimated. Results The model shows that dermal diffusion alone cannot explain the in vivo data, and blood and/or lymphatic transport to deep tissues must be present for almost all of the drugs tested. Conclusion Topical drug delivery systems for deeper tissue delivery should recognise that blood/lymphatic transport may dominate over dermal diffusion for certain compounds.
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    Journal Title
    Pharmaceutical Research
    Volume
    28
    DOI
    https://doi.org/10.1007/s11095-011-0437-2
    Subject
    Biological mathematics
    Pharmacology and pharmaceutical sciences
    Pharmaceutical sciences
    Publication URI
    http://hdl.handle.net/10072/43964
    Collection
    • Journal articles

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